Treatment of felt and felt hat bodies



Patented Mar. 12, 1929.

UNITED STATES ERICH Bill-1M, OF VIENNA, AUSTRIA.

TREATMENT OF FELT AND FELT HAT BODIES.

No Drawing. Application filed September 2, 1926, Serial No. 133,296, and in Austria June 1, 1926'.

My invention relates to the treatment of felt and felt hat bodies and more particularly of velour felt hat bodies and has for its objectto improve the surface of such felt articles 5 ivy] increasing their lustre and the firmness of ie t. l

\Vith this object in View my invention consists in treating the felt with aqueous solutions of organic tanning agents.

"The tanning agents may be also the synthetic tanning agents such as neradole.

The following is a description of several ways of carrying into practice my invention.

1. The velour felt hat bodies are treated for to 2 hours with an aqueous solution of to 30% of a synthetic tanning agent such those commercially known as neradole, ordoval or the like at a temperature of 60 to 80 centigrade and then thoroughly rinsed.

2. For simultaneously dying felt articles and treating them in accordance with my invention I may add to the dyeing liquor 15 to 40% of an or anic tanning agent by weight of the felt articles. whereupon the dyeing is effected in the usual manner.

. If it is desired to dye the articles in black or dark colours, ordinary vegetable agents may .be used. If it is desired to dye them in light colours, synthetic tanning agents have to be used, because the vegetable tanning agents are in most cases too dark in colour.

3. To the brushing water of velour felt hat bodies 3 to 10% by weight of a. tanning agent,

preferably a synthetic one such as neradole or thelike are added whereupon the articles are brushed in the usual way. The addition of the deposits formed in the fermentation of wine heretofore practiced may be dispensed with.

neously with other operations that. the articles have to undergo.

I wish it to be understood that I do not claim the use of formaldehyde or other aldehydes or ketones as a tanning agent.

What I claim is: I 1. A process for treating felt consisting in treating the same with an aqueous solution of an organic tanning agent.

2. A process for treating felt consisting in treating the same with an aqueous, uncoloured solution of an organic tanning agent.

3. A process for treating felt consisting in treating the same with an aqueous solution of a synthetic organic uneoloured tanning agent.

4. A felt hat body having incorporated into its fibre an organic tannin a cut.

. 5. A velour felt hat bo y aving incorporated into its hair an organic tanmng'a ent:-"'!0 In testimony whereof I have aflixe my signature.

- ERICH norm,

4. To the planking water to be used in 4 

